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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Copyright (C) 2007 The Guava Authors<a name="line.2"></a>
<span class="sourceLineNo">003</span> *<a name="line.3"></a>
<span class="sourceLineNo">004</span> * Licensed under the Apache License, Version 2.0 (the "License");<a name="line.4"></a>
<span class="sourceLineNo">005</span> * you may not use this file except in compliance with the License.<a name="line.5"></a>
<span class="sourceLineNo">006</span> * You may obtain a copy of the License at<a name="line.6"></a>
<span class="sourceLineNo">007</span> *<a name="line.7"></a>
<span class="sourceLineNo">008</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * Unless required by applicable law or agreed to in writing, software<a name="line.10"></a>
<span class="sourceLineNo">011</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.11"></a>
<span class="sourceLineNo">012</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.12"></a>
<span class="sourceLineNo">013</span> * See the License for the specific language governing permissions and<a name="line.13"></a>
<span class="sourceLineNo">014</span> * limitations under the License.<a name="line.14"></a>
<span class="sourceLineNo">015</span> */<a name="line.15"></a>
<span class="sourceLineNo">016</span><a name="line.16"></a>
<span class="sourceLineNo">017</span>package com.google.common.collect;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>import static com.google.common.base.Preconditions.checkNotNull;<a name="line.19"></a>
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span>import com.google.common.annotations.Beta;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import com.google.common.annotations.GwtCompatible;<a name="line.22"></a>
<span class="sourceLineNo">023</span><a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.io.Serializable;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.Collection;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.Comparator;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.util.Iterator;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.util.LinkedHashMap;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import java.util.List;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import java.util.Map;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import java.util.Map.Entry;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import java.util.Set;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import java.util.SortedSet;<a name="line.33"></a>
<span class="sourceLineNo">034</span><a name="line.34"></a>
<span class="sourceLineNo">035</span>import javax.annotation.Nullable;<a name="line.35"></a>
<span class="sourceLineNo">036</span><a name="line.36"></a>
<span class="sourceLineNo">037</span>/**<a name="line.37"></a>
<span class="sourceLineNo">038</span> * Factory and utilities pertaining to the {@code MapConstraint} interface.<a name="line.38"></a>
<span class="sourceLineNo">039</span> *<a name="line.39"></a>
<span class="sourceLineNo">040</span> * @see Constraints<a name="line.40"></a>
<span class="sourceLineNo">041</span> * @author Mike Bostock<a name="line.41"></a>
<span class="sourceLineNo">042</span> * @since 3.0<a name="line.42"></a>
<span class="sourceLineNo">043</span> */<a name="line.43"></a>
<span class="sourceLineNo">044</span>@Beta<a name="line.44"></a>
<span class="sourceLineNo">045</span>@GwtCompatible<a name="line.45"></a>
<span class="sourceLineNo">046</span>public final class MapConstraints {<a name="line.46"></a>
<span class="sourceLineNo">047</span>  private MapConstraints() {}<a name="line.47"></a>
<span class="sourceLineNo">048</span><a name="line.48"></a>
<span class="sourceLineNo">049</span>  /**<a name="line.49"></a>
<span class="sourceLineNo">050</span>   * Returns a constraint that verifies that neither the key nor the value is<a name="line.50"></a>
<span class="sourceLineNo">051</span>   * null. If either is null, a {@link NullPointerException} is thrown.<a name="line.51"></a>
<span class="sourceLineNo">052</span>   */<a name="line.52"></a>
<span class="sourceLineNo">053</span>  public static MapConstraint&lt;Object, Object&gt; notNull() {<a name="line.53"></a>
<span class="sourceLineNo">054</span>    return NotNullMapConstraint.INSTANCE;<a name="line.54"></a>
<span class="sourceLineNo">055</span>  }<a name="line.55"></a>
<span class="sourceLineNo">056</span><a name="line.56"></a>
<span class="sourceLineNo">057</span>  // enum singleton pattern<a name="line.57"></a>
<span class="sourceLineNo">058</span>  private enum NotNullMapConstraint implements MapConstraint&lt;Object, Object&gt; {<a name="line.58"></a>
<span class="sourceLineNo">059</span>    INSTANCE;<a name="line.59"></a>
<span class="sourceLineNo">060</span><a name="line.60"></a>
<span class="sourceLineNo">061</span>    @Override<a name="line.61"></a>
<span class="sourceLineNo">062</span>    public void checkKeyValue(Object key, Object value) {<a name="line.62"></a>
<span class="sourceLineNo">063</span>      checkNotNull(key);<a name="line.63"></a>
<span class="sourceLineNo">064</span>      checkNotNull(value);<a name="line.64"></a>
<span class="sourceLineNo">065</span>    }<a name="line.65"></a>
<span class="sourceLineNo">066</span><a name="line.66"></a>
<span class="sourceLineNo">067</span>    @Override public String toString() {<a name="line.67"></a>
<span class="sourceLineNo">068</span>      return "Not null";<a name="line.68"></a>
<span class="sourceLineNo">069</span>    }<a name="line.69"></a>
<span class="sourceLineNo">070</span>  }<a name="line.70"></a>
<span class="sourceLineNo">071</span><a name="line.71"></a>
<span class="sourceLineNo">072</span>  /**<a name="line.72"></a>
<span class="sourceLineNo">073</span>   * Returns a constrained view of the specified map, using the specified<a name="line.73"></a>
<span class="sourceLineNo">074</span>   * constraint. Any operations that add new mappings will call the provided<a name="line.74"></a>
<span class="sourceLineNo">075</span>   * constraint. However, this method does not verify that existing mappings<a name="line.75"></a>
<span class="sourceLineNo">076</span>   * satisfy the constraint.<a name="line.76"></a>
<span class="sourceLineNo">077</span>   *<a name="line.77"></a>
<span class="sourceLineNo">078</span>   * &lt;p&gt;The returned map is not serializable.<a name="line.78"></a>
<span class="sourceLineNo">079</span>   *<a name="line.79"></a>
<span class="sourceLineNo">080</span>   * @param map the map to constrain<a name="line.80"></a>
<span class="sourceLineNo">081</span>   * @param constraint the constraint that validates added entries<a name="line.81"></a>
<span class="sourceLineNo">082</span>   * @return a constrained view of the specified map<a name="line.82"></a>
<span class="sourceLineNo">083</span>   */<a name="line.83"></a>
<span class="sourceLineNo">084</span>  public static &lt;K, V&gt; Map&lt;K, V&gt; constrainedMap(<a name="line.84"></a>
<span class="sourceLineNo">085</span>      Map&lt;K, V&gt; map, MapConstraint&lt;? super K, ? super V&gt; constraint) {<a name="line.85"></a>
<span class="sourceLineNo">086</span>    return new ConstrainedMap&lt;K, V&gt;(map, constraint);<a name="line.86"></a>
<span class="sourceLineNo">087</span>  }<a name="line.87"></a>
<span class="sourceLineNo">088</span><a name="line.88"></a>
<span class="sourceLineNo">089</span>  /**<a name="line.89"></a>
<span class="sourceLineNo">090</span>   * Returns a constrained view of the specified multimap, using the specified<a name="line.90"></a>
<span class="sourceLineNo">091</span>   * constraint. Any operations that add new mappings will call the provided<a name="line.91"></a>
<span class="sourceLineNo">092</span>   * constraint. However, this method does not verify that existing mappings<a name="line.92"></a>
<span class="sourceLineNo">093</span>   * satisfy the constraint.<a name="line.93"></a>
<span class="sourceLineNo">094</span>   *<a name="line.94"></a>
<span class="sourceLineNo">095</span>   * &lt;p&gt;Note that the generated multimap's {@link Multimap#removeAll} and<a name="line.95"></a>
<span class="sourceLineNo">096</span>   * {@link Multimap#replaceValues} methods return collections that are not<a name="line.96"></a>
<span class="sourceLineNo">097</span>   * constrained.<a name="line.97"></a>
<span class="sourceLineNo">098</span>   *<a name="line.98"></a>
<span class="sourceLineNo">099</span>   * &lt;p&gt;The returned multimap is not serializable.<a name="line.99"></a>
<span class="sourceLineNo">100</span>   *<a name="line.100"></a>
<span class="sourceLineNo">101</span>   * @param multimap the multimap to constrain<a name="line.101"></a>
<span class="sourceLineNo">102</span>   * @param constraint the constraint that validates added entries<a name="line.102"></a>
<span class="sourceLineNo">103</span>   * @return a constrained view of the multimap<a name="line.103"></a>
<span class="sourceLineNo">104</span>   */<a name="line.104"></a>
<span class="sourceLineNo">105</span>  public static &lt;K, V&gt; Multimap&lt;K, V&gt; constrainedMultimap(<a name="line.105"></a>
<span class="sourceLineNo">106</span>      Multimap&lt;K, V&gt; multimap, MapConstraint&lt;? super K, ? super V&gt; constraint) {<a name="line.106"></a>
<span class="sourceLineNo">107</span>    return new ConstrainedMultimap&lt;K, V&gt;(multimap, constraint);<a name="line.107"></a>
<span class="sourceLineNo">108</span>  }<a name="line.108"></a>
<span class="sourceLineNo">109</span><a name="line.109"></a>
<span class="sourceLineNo">110</span>  /**<a name="line.110"></a>
<span class="sourceLineNo">111</span>   * Returns a constrained view of the specified list multimap, using the<a name="line.111"></a>
<span class="sourceLineNo">112</span>   * specified constraint. Any operations that add new mappings will call the<a name="line.112"></a>
<span class="sourceLineNo">113</span>   * provided constraint. However, this method does not verify that existing<a name="line.113"></a>
<span class="sourceLineNo">114</span>   * mappings satisfy the constraint.<a name="line.114"></a>
<span class="sourceLineNo">115</span>   *<a name="line.115"></a>
<span class="sourceLineNo">116</span>   * &lt;p&gt;Note that the generated multimap's {@link Multimap#removeAll} and<a name="line.116"></a>
<span class="sourceLineNo">117</span>   * {@link Multimap#replaceValues} methods return collections that are not<a name="line.117"></a>
<span class="sourceLineNo">118</span>   * constrained.<a name="line.118"></a>
<span class="sourceLineNo">119</span>   *<a name="line.119"></a>
<span class="sourceLineNo">120</span>   * &lt;p&gt;The returned multimap is not serializable.<a name="line.120"></a>
<span class="sourceLineNo">121</span>   *<a name="line.121"></a>
<span class="sourceLineNo">122</span>   * @param multimap the multimap to constrain<a name="line.122"></a>
<span class="sourceLineNo">123</span>   * @param constraint the constraint that validates added entries<a name="line.123"></a>
<span class="sourceLineNo">124</span>   * @return a constrained view of the specified multimap<a name="line.124"></a>
<span class="sourceLineNo">125</span>   */<a name="line.125"></a>
<span class="sourceLineNo">126</span>  public static &lt;K, V&gt; ListMultimap&lt;K, V&gt; constrainedListMultimap(<a name="line.126"></a>
<span class="sourceLineNo">127</span>      ListMultimap&lt;K, V&gt; multimap,<a name="line.127"></a>
<span class="sourceLineNo">128</span>      MapConstraint&lt;? super K, ? super V&gt; constraint) {<a name="line.128"></a>
<span class="sourceLineNo">129</span>    return new ConstrainedListMultimap&lt;K, V&gt;(multimap, constraint);<a name="line.129"></a>
<span class="sourceLineNo">130</span>  }<a name="line.130"></a>
<span class="sourceLineNo">131</span><a name="line.131"></a>
<span class="sourceLineNo">132</span>  /**<a name="line.132"></a>
<span class="sourceLineNo">133</span>   * Returns a constrained view of the specified set multimap, using the<a name="line.133"></a>
<span class="sourceLineNo">134</span>   * specified constraint. Any operations that add new mappings will call the<a name="line.134"></a>
<span class="sourceLineNo">135</span>   * provided constraint. However, this method does not verify that existing<a name="line.135"></a>
<span class="sourceLineNo">136</span>   * mappings satisfy the constraint.<a name="line.136"></a>
<span class="sourceLineNo">137</span>   *<a name="line.137"></a>
<span class="sourceLineNo">138</span>   * &lt;p&gt;Note that the generated multimap's {@link Multimap#removeAll} and<a name="line.138"></a>
<span class="sourceLineNo">139</span>   * {@link Multimap#replaceValues} methods return collections that are not<a name="line.139"></a>
<span class="sourceLineNo">140</span>   * constrained.<a name="line.140"></a>
<span class="sourceLineNo">141</span>   * &lt;p&gt;The returned multimap is not serializable.<a name="line.141"></a>
<span class="sourceLineNo">142</span>   *<a name="line.142"></a>
<span class="sourceLineNo">143</span>   * @param multimap the multimap to constrain<a name="line.143"></a>
<span class="sourceLineNo">144</span>   * @param constraint the constraint that validates added entries<a name="line.144"></a>
<span class="sourceLineNo">145</span>   * @return a constrained view of the specified multimap<a name="line.145"></a>
<span class="sourceLineNo">146</span>   */<a name="line.146"></a>
<span class="sourceLineNo">147</span>  public static &lt;K, V&gt; SetMultimap&lt;K, V&gt; constrainedSetMultimap(<a name="line.147"></a>
<span class="sourceLineNo">148</span>      SetMultimap&lt;K, V&gt; multimap,<a name="line.148"></a>
<span class="sourceLineNo">149</span>      MapConstraint&lt;? super K, ? super V&gt; constraint) {<a name="line.149"></a>
<span class="sourceLineNo">150</span>    return new ConstrainedSetMultimap&lt;K, V&gt;(multimap, constraint);<a name="line.150"></a>
<span class="sourceLineNo">151</span>  }<a name="line.151"></a>
<span class="sourceLineNo">152</span><a name="line.152"></a>
<span class="sourceLineNo">153</span>  /**<a name="line.153"></a>
<span class="sourceLineNo">154</span>   * Returns a constrained view of the specified sorted-set multimap, using the<a name="line.154"></a>
<span class="sourceLineNo">155</span>   * specified constraint. Any operations that add new mappings will call the<a name="line.155"></a>
<span class="sourceLineNo">156</span>   * provided constraint. However, this method does not verify that existing<a name="line.156"></a>
<span class="sourceLineNo">157</span>   * mappings satisfy the constraint.<a name="line.157"></a>
<span class="sourceLineNo">158</span>   *<a name="line.158"></a>
<span class="sourceLineNo">159</span>   * &lt;p&gt;Note that the generated multimap's {@link Multimap#removeAll} and<a name="line.159"></a>
<span class="sourceLineNo">160</span>   * {@link Multimap#replaceValues} methods return collections that are not<a name="line.160"></a>
<span class="sourceLineNo">161</span>   * constrained.<a name="line.161"></a>
<span class="sourceLineNo">162</span>   * &lt;p&gt;The returned multimap is not serializable.<a name="line.162"></a>
<span class="sourceLineNo">163</span>   *<a name="line.163"></a>
<span class="sourceLineNo">164</span>   * @param multimap the multimap to constrain<a name="line.164"></a>
<span class="sourceLineNo">165</span>   * @param constraint the constraint that validates added entries<a name="line.165"></a>
<span class="sourceLineNo">166</span>   * @return a constrained view of the specified multimap<a name="line.166"></a>
<span class="sourceLineNo">167</span>   */<a name="line.167"></a>
<span class="sourceLineNo">168</span>  public static &lt;K, V&gt; SortedSetMultimap&lt;K, V&gt; constrainedSortedSetMultimap(<a name="line.168"></a>
<span class="sourceLineNo">169</span>      SortedSetMultimap&lt;K, V&gt; multimap,<a name="line.169"></a>
<span class="sourceLineNo">170</span>      MapConstraint&lt;? super K, ? super V&gt; constraint) {<a name="line.170"></a>
<span class="sourceLineNo">171</span>    return new ConstrainedSortedSetMultimap&lt;K, V&gt;(multimap, constraint);<a name="line.171"></a>
<span class="sourceLineNo">172</span>  }<a name="line.172"></a>
<span class="sourceLineNo">173</span><a name="line.173"></a>
<span class="sourceLineNo">174</span>  /**<a name="line.174"></a>
<span class="sourceLineNo">175</span>   * Returns a constrained view of the specified entry, using the specified<a name="line.175"></a>
<span class="sourceLineNo">176</span>   * constraint. The {@link Entry#setValue} operation will be verified with the<a name="line.176"></a>
<span class="sourceLineNo">177</span>   * constraint.<a name="line.177"></a>
<span class="sourceLineNo">178</span>   *<a name="line.178"></a>
<span class="sourceLineNo">179</span>   * @param entry the entry to constrain<a name="line.179"></a>
<span class="sourceLineNo">180</span>   * @param constraint the constraint for the entry<a name="line.180"></a>
<span class="sourceLineNo">181</span>   * @return a constrained view of the specified entry<a name="line.181"></a>
<span class="sourceLineNo">182</span>   */<a name="line.182"></a>
<span class="sourceLineNo">183</span>  private static &lt;K, V&gt; Entry&lt;K, V&gt; constrainedEntry(<a name="line.183"></a>
<span class="sourceLineNo">184</span>      final Entry&lt;K, V&gt; entry,<a name="line.184"></a>
<span class="sourceLineNo">185</span>      final MapConstraint&lt;? super K, ? super V&gt; constraint) {<a name="line.185"></a>
<span class="sourceLineNo">186</span>    checkNotNull(entry);<a name="line.186"></a>
<span class="sourceLineNo">187</span>    checkNotNull(constraint);<a name="line.187"></a>
<span class="sourceLineNo">188</span>    return new ForwardingMapEntry&lt;K, V&gt;() {<a name="line.188"></a>
<span class="sourceLineNo">189</span>      @Override protected Entry&lt;K, V&gt; delegate() {<a name="line.189"></a>
<span class="sourceLineNo">190</span>        return entry;<a name="line.190"></a>
<span class="sourceLineNo">191</span>      }<a name="line.191"></a>
<span class="sourceLineNo">192</span>      @Override public V setValue(V value) {<a name="line.192"></a>
<span class="sourceLineNo">193</span>        constraint.checkKeyValue(getKey(), value);<a name="line.193"></a>
<span class="sourceLineNo">194</span>        return entry.setValue(value);<a name="line.194"></a>
<span class="sourceLineNo">195</span>      }<a name="line.195"></a>
<span class="sourceLineNo">196</span>    };<a name="line.196"></a>
<span class="sourceLineNo">197</span>  }<a name="line.197"></a>
<span class="sourceLineNo">198</span><a name="line.198"></a>
<span class="sourceLineNo">199</span>  /**<a name="line.199"></a>
<span class="sourceLineNo">200</span>   * Returns a constrained view of the specified {@code asMap} entry, using the<a name="line.200"></a>
<span class="sourceLineNo">201</span>   * specified constraint. The {@link Entry#setValue} operation will be verified<a name="line.201"></a>
<span class="sourceLineNo">202</span>   * with the constraint, and the collection returned by {@link Entry#getValue}<a name="line.202"></a>
<span class="sourceLineNo">203</span>   * will be similarly constrained.<a name="line.203"></a>
<span class="sourceLineNo">204</span>   *<a name="line.204"></a>
<span class="sourceLineNo">205</span>   * @param entry the {@code asMap} entry to constrain<a name="line.205"></a>
<span class="sourceLineNo">206</span>   * @param constraint the constraint for the entry<a name="line.206"></a>
<span class="sourceLineNo">207</span>   * @return a constrained view of the specified entry<a name="line.207"></a>
<span class="sourceLineNo">208</span>   */<a name="line.208"></a>
<span class="sourceLineNo">209</span>  private static &lt;K, V&gt; Entry&lt;K, Collection&lt;V&gt;&gt; constrainedAsMapEntry(<a name="line.209"></a>
<span class="sourceLineNo">210</span>      final Entry&lt;K, Collection&lt;V&gt;&gt; entry,<a name="line.210"></a>
<span class="sourceLineNo">211</span>      final MapConstraint&lt;? super K, ? super V&gt; constraint) {<a name="line.211"></a>
<span class="sourceLineNo">212</span>    checkNotNull(entry);<a name="line.212"></a>
<span class="sourceLineNo">213</span>    checkNotNull(constraint);<a name="line.213"></a>
<span class="sourceLineNo">214</span>    return new ForwardingMapEntry&lt;K, Collection&lt;V&gt;&gt;() {<a name="line.214"></a>
<span class="sourceLineNo">215</span>      @Override protected Entry&lt;K, Collection&lt;V&gt;&gt; delegate() {<a name="line.215"></a>
<span class="sourceLineNo">216</span>        return entry;<a name="line.216"></a>
<span class="sourceLineNo">217</span>      }<a name="line.217"></a>
<span class="sourceLineNo">218</span>      @Override public Collection&lt;V&gt; getValue() {<a name="line.218"></a>
<span class="sourceLineNo">219</span>        return Constraints.constrainedTypePreservingCollection(<a name="line.219"></a>
<span class="sourceLineNo">220</span>            entry.getValue(), new Constraint&lt;V&gt;() {<a name="line.220"></a>
<span class="sourceLineNo">221</span>          @Override<a name="line.221"></a>
<span class="sourceLineNo">222</span>          public V checkElement(V value) {<a name="line.222"></a>
<span class="sourceLineNo">223</span>            constraint.checkKeyValue(getKey(), value);<a name="line.223"></a>
<span class="sourceLineNo">224</span>            return value;<a name="line.224"></a>
<span class="sourceLineNo">225</span>          }<a name="line.225"></a>
<span class="sourceLineNo">226</span>        });<a name="line.226"></a>
<span class="sourceLineNo">227</span>      }<a name="line.227"></a>
<span class="sourceLineNo">228</span>    };<a name="line.228"></a>
<span class="sourceLineNo">229</span>  }<a name="line.229"></a>
<span class="sourceLineNo">230</span><a name="line.230"></a>
<span class="sourceLineNo">231</span>  /**<a name="line.231"></a>
<span class="sourceLineNo">232</span>   * Returns a constrained view of the specified set of {@code asMap} entries,<a name="line.232"></a>
<span class="sourceLineNo">233</span>   * using the specified constraint. The {@link Entry#setValue} operation will<a name="line.233"></a>
<span class="sourceLineNo">234</span>   * be verified with the constraint, and the collection returned by {@link<a name="line.234"></a>
<span class="sourceLineNo">235</span>   * Entry#getValue} will be similarly constrained. The {@code add} and {@code<a name="line.235"></a>
<span class="sourceLineNo">236</span>   * addAll} operations simply forward to the underlying set, which throws an<a name="line.236"></a>
<span class="sourceLineNo">237</span>   * {@link UnsupportedOperationException} per the multimap specification.<a name="line.237"></a>
<span class="sourceLineNo">238</span>   *<a name="line.238"></a>
<span class="sourceLineNo">239</span>   * @param entries the entries to constrain<a name="line.239"></a>
<span class="sourceLineNo">240</span>   * @param constraint the constraint for the entries<a name="line.240"></a>
<span class="sourceLineNo">241</span>   * @return a constrained view of the entries<a name="line.241"></a>
<span class="sourceLineNo">242</span>   */<a name="line.242"></a>
<span class="sourceLineNo">243</span>  private static &lt;K, V&gt; Set&lt;Entry&lt;K, Collection&lt;V&gt;&gt;&gt; constrainedAsMapEntries(<a name="line.243"></a>
<span class="sourceLineNo">244</span>      Set&lt;Entry&lt;K, Collection&lt;V&gt;&gt;&gt; entries,<a name="line.244"></a>
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<span class="sourceLineNo">249</span>  /**<a name="line.249"></a>
<span class="sourceLineNo">250</span>   * Returns a constrained view of the specified collection (or set) of entries,<a name="line.250"></a>
<span class="sourceLineNo">251</span>   * using the specified constraint. The {@link Entry#setValue} operation will<a name="line.251"></a>
<span class="sourceLineNo">252</span>   * be verified with the constraint, along with add operations on the returned<a name="line.252"></a>
<span class="sourceLineNo">253</span>   * collection. The {@code add} and {@code addAll} operations simply forward to<a name="line.253"></a>
<span class="sourceLineNo">254</span>   * the underlying collection, which throws an {@link<a name="line.254"></a>
<span class="sourceLineNo">255</span>   * UnsupportedOperationException} per the map and multimap specification.<a name="line.255"></a>
<span class="sourceLineNo">256</span>   *<a name="line.256"></a>
<span class="sourceLineNo">257</span>   * @param entries the entries to constrain<a name="line.257"></a>
<span class="sourceLineNo">258</span>   * @param constraint the constraint for the entries<a name="line.258"></a>
<span class="sourceLineNo">259</span>   * @return a constrained view of the specified entries<a name="line.259"></a>
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<span class="sourceLineNo">262</span>      Collection&lt;Entry&lt;K, V&gt;&gt; entries,<a name="line.262"></a>
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<span class="sourceLineNo">271</span>   * Returns a constrained view of the specified set of entries, using the<a name="line.271"></a>
<span class="sourceLineNo">272</span>   * specified constraint. The {@link Entry#setValue} operation will be verified<a name="line.272"></a>
<span class="sourceLineNo">273</span>   * with the constraint, along with add operations on the returned set. The<a name="line.273"></a>
<span class="sourceLineNo">274</span>   * {@code add} and {@code addAll} operations simply forward to the underlying<a name="line.274"></a>
<span class="sourceLineNo">275</span>   * set, which throws an {@link UnsupportedOperationException} per the map and<a name="line.275"></a>
<span class="sourceLineNo">276</span>   * multimap specification.<a name="line.276"></a>
<span class="sourceLineNo">277</span>   *<a name="line.277"></a>
<span class="sourceLineNo">278</span>   * &lt;p&gt;The returned multimap is not serializable.<a name="line.278"></a>
<span class="sourceLineNo">279</span>   *<a name="line.279"></a>
<span class="sourceLineNo">280</span>   * @param entries the entries to constrain<a name="line.280"></a>
<span class="sourceLineNo">281</span>   * @param constraint the constraint for the entries<a name="line.281"></a>
<span class="sourceLineNo">282</span>   * @return a constrained view of the specified entries<a name="line.282"></a>
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<span class="sourceLineNo">290</span>  /** @see MapConstraints#constrainedMap */<a name="line.290"></a>
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<span class="sourceLineNo">307</span>        entrySet = result =<a name="line.307"></a>
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<span class="sourceLineNo">312</span>    @Override public V put(K key, V value) {<a name="line.312"></a>
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<span class="sourceLineNo">321</span>  /**<a name="line.321"></a>
<span class="sourceLineNo">322</span>   * Returns a constrained view of the specified bimap, using the specified<a name="line.322"></a>
<span class="sourceLineNo">323</span>   * constraint. Any operations that modify the bimap will have the associated<a name="line.323"></a>
<span class="sourceLineNo">324</span>   * keys and values verified with the constraint.<a name="line.324"></a>
<span class="sourceLineNo">325</span>   *<a name="line.325"></a>
<span class="sourceLineNo">326</span>   * &lt;p&gt;The returned bimap is not serializable.<a name="line.326"></a>
<span class="sourceLineNo">327</span>   *<a name="line.327"></a>
<span class="sourceLineNo">328</span>   * @param map the bimap to constrain<a name="line.328"></a>
<span class="sourceLineNo">329</span>   * @param constraint the constraint that validates added entries<a name="line.329"></a>
<span class="sourceLineNo">330</span>   * @return a constrained view of the specified bimap<a name="line.330"></a>
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<span class="sourceLineNo">339</span>      implements BiMap&lt;K, V&gt; {<a name="line.339"></a>
<span class="sourceLineNo">340</span>    /*<a name="line.340"></a>
<span class="sourceLineNo">341</span>     * We could switch to racy single-check lazy init and remove volatile, but<a name="line.341"></a>
<span class="sourceLineNo">342</span>     * there's a downside. That's because this field is also written in the<a name="line.342"></a>
<span class="sourceLineNo">343</span>     * constructor. Without volatile, the constructor's write of the existing<a name="line.343"></a>
<span class="sourceLineNo">344</span>     * inverse BiMap could occur after inverse()'s read of the field's initial<a name="line.344"></a>
<span class="sourceLineNo">345</span>     * null value, leading inverse() to overwrite the existing inverse with a<a name="line.345"></a>
<span class="sourceLineNo">346</span>     * doubly indirect version. This wouldn't be catastrophic, but it's<a name="line.346"></a>
<span class="sourceLineNo">347</span>     * something to keep in mind if we make the change.<a name="line.347"></a>
<span class="sourceLineNo">348</span>     *<a name="line.348"></a>
<span class="sourceLineNo">349</span>     * Note that UnmodifiableBiMap *does* use racy single-check lazy init.<a name="line.349"></a>
<span class="sourceLineNo">350</span>     * TODO(cpovirk): pick one and standardize<a name="line.350"></a>
<span class="sourceLineNo">351</span>     */<a name="line.351"></a>
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<span class="sourceLineNo">359</span><a name="line.359"></a>
<span class="sourceLineNo">360</span>    @Override protected BiMap&lt;K, V&gt; delegate() {<a name="line.360"></a>
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<span class="sourceLineNo">364</span>    @Override<a name="line.364"></a>
<span class="sourceLineNo">365</span>    public V forcePut(K key, V value) {<a name="line.365"></a>
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<span class="sourceLineNo">370</span>    @Override<a name="line.370"></a>
<span class="sourceLineNo">371</span>    public BiMap&lt;V, K&gt; inverse() {<a name="line.371"></a>
<span class="sourceLineNo">372</span>      if (inverse == null) {<a name="line.372"></a>
<span class="sourceLineNo">373</span>        inverse = new ConstrainedBiMap&lt;V, K&gt;(delegate().inverse(), this,<a name="line.373"></a>
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<span class="sourceLineNo">384</span>  /** @see MapConstraints#constrainedBiMap */<a name="line.384"></a>
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<span class="sourceLineNo">415</span>    @Override public Map&lt;K, Collection&lt;V&gt;&gt; asMap() {<a name="line.415"></a>
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<span class="sourceLineNo">423</span><a name="line.423"></a>
<span class="sourceLineNo">424</span>          @Override protected Map&lt;K, Collection&lt;V&gt;&gt; delegate() {<a name="line.424"></a>
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<span class="sourceLineNo">437</span>          @SuppressWarnings("unchecked")<a name="line.437"></a>
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<span class="sourceLineNo">723</span>  private static class ConstrainedSetMultimap&lt;K, V&gt;<a name="line.723"></a>
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<span class="sourceLineNo">744</span>  private static class ConstrainedSortedSetMultimap&lt;K, V&gt;<a name="line.744"></a>
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<span class="sourceLineNo">761</span>    public Comparator&lt;? super V&gt; valueComparator() {<a name="line.761"></a>
<span class="sourceLineNo">762</span>      return ((SortedSetMultimap&lt;K, V&gt;) delegate()).valueComparator();<a name="line.762"></a>
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<span class="sourceLineNo">768</span>      MapConstraint&lt;? super K, ? super V&gt; constraint) {<a name="line.768"></a>
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<span class="sourceLineNo">773</span>    return copy;<a name="line.773"></a>
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<span class="sourceLineNo">775</span><a name="line.775"></a>
<span class="sourceLineNo">776</span>  private static &lt;K, V&gt; Map&lt;K, V&gt; checkMap(Map&lt;? extends K, ? extends V&gt; map,<a name="line.776"></a>
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<span class="sourceLineNo">778</span>    Map&lt;K, V&gt; copy = new LinkedHashMap&lt;K, V&gt;(map);<a name="line.778"></a>
<span class="sourceLineNo">779</span>    for (Entry&lt;K, V&gt; entry : copy.entrySet()) {<a name="line.779"></a>
<span class="sourceLineNo">780</span>      constraint.checkKeyValue(entry.getKey(), entry.getValue());<a name="line.780"></a>
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<span class="sourceLineNo">782</span>    return copy;<a name="line.782"></a>
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<span class="sourceLineNo">784</span>}<a name="line.784"></a>




























































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